Quantum Teleportation in Non-equilibrium Environments and Fixed-point Fidelity

• URL: http://arxiv.org/abs/2505.05743v1
• Date: Fri, 09 May 2025 02:55:47 GMT
• Title: Quantum Teleportation in Non-equilibrium Environments and Fixed-point Fidelity
• Authors: Xiaokun Yan, Zhihai Wang, Kun Zhang, Jin Wang,
• Abstract summary: We investigate quantum teleportation in non-equilibrium environments with different temperatures or chemical potentials.<n>We call it teleportation with a fixed-point fidelity. Notably, at the fixed-point, fidelity can also be enhanced by combining the two detuned qubits and non-equilibrium environments.
• Score: 10.766457833555638
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum teleportation, a fundamental protocol in quantum information science, enables the transfer of quantum states through entangled particle pairs and classical communication channels. While ideal quantum teleportation requires maximally entangled states as resources, real-world implementations inevitably face environmental noise and decoherence effects. In this work, we investigate quantum teleportation in non-equilibrium environments with different temperatures or chemical potentials. We apply the Bloch-Redfield equation to characterize the non-equilibrium dynamics. In both bosonic and fermionic setups, the fidelity can be enhanced beyond the equilibrium values. Under specific non-equilibrium conditions, the fidelities of all input states are identical. We call it teleportation with a fixed-point fidelity. Notably, at the fixed-point, fidelity can also be enhanced by combining the two detuned qubits and non-equilibrium environments. These findings provide important guidance for implementing quantum communication protocols in realistic environments, while the fixed-point mechanism offers a promising pathway toward simplifying practical quantum teleportation schemes.

Related papers

• Path superposition as resource for perfect quantum teleportation with separable states [0.8192907805418583]
  We show that it is possible to relax the entanglement requirement in quantum teleportation if we have access to a certain strain of superposition of quantum processes.<n>We find that when superposition of paths is incorporated in the protocol, perfect quantum teleportation becomes possible with nonzero probability.
  arXiv  Detail & Related papers  (2025-05-16T16:03:38Z)
• Quantum teleportation between a continuous-variable optical qumode and a discrete-variable solid-state qubit [12.102621653528027]
  We propose a scheme to teleport a continuous variable optical qubit, encoded in an optical qumode, onto a discrete variable solid-state qubit, associated with a single nitrogen-vacancy center spin in diamond, via a hybrid entanglement. We find that the average teleportation fidelity can still exceed the classical limit, enabling substantial teleportation distances under realistic experimental conditions.
  arXiv  Detail & Related papers  (2024-06-27T09:20:09Z)
• Environment-induced Transitions in Many-body Quantum Teleportation [19.646332825082478]
  We study many-body quantum teleportation in the presence of environments. In the quantum regime, teleportation can outperform its classical counterparts, while in the classical regime, it can be replaced by a classical channel.
  arXiv  Detail & Related papers  (2024-06-04T12:51:23Z)
• A Study on Thermal Quantum Resources and Probabilistic Teleportation in Spin-1/2 Heisenberg XYZ+DM+KSEA Model under Variable Zeeman Splitting [0.8136541584281987]
  Investigation of measures of quantum coherence and quantum correlation in the spin-1/2 Heisenberg XYZ model with added Dzyaloshinsky-Moriya (DM) and Kaplan--Shekhtman--Entin-Wohlman--Aharony (KSEA) interactions.
  arXiv  Detail & Related papers  (2024-05-25T16:13:40Z)
• Enhanced quantum state transfer: Circumventing quantum chaotic behavior [35.74056021340496]
  We show how to transfer few-particle quantum states in a two-dimensional quantum network. Our approach paves the way to short-distance quantum communication for connecting distributed quantum processors or registers.
  arXiv  Detail & Related papers  (2024-02-01T19:00:03Z)
• Variational quantum simulation using non-Gaussian continuous-variable systems [39.58317527488534]
  We present a continuous-variable variational quantum eigensolver compatible with state-of-the-art photonic technology. The framework we introduce allows us to compare discrete and continuous variable systems without introducing a truncation of the Hilbert space.
  arXiv  Detail & Related papers  (2023-10-24T15:20:07Z)
• Harnessing quantumness of states using discrete Wigner functions under (non)-Markovian quantum channels [0.0]
  The study of Wigner negativity and its evolution under different quantum channels can provide insight into the stability and robustness of quantum states. We construct different negative quantum states which can be used as a resource for quantum computation and quantum teleportation.
  arXiv  Detail & Related papers  (2023-03-09T14:41:38Z)
• From Goldilocks to Twin Peaks: multiple optimal regimes for quantum transport in disordered networks [68.8204255655161]
  Open quantum systems theory has been successfully applied to predict the existence of environmental noise-assisted quantum transport. This paper shows that a consistent subset of physically modelled transport networks can have at least two ENAQT peaks in their steady state transport efficiency.
  arXiv  Detail & Related papers  (2022-10-21T10:57:16Z)
• Direct Quantum Communications in the Presence of Realistic Noisy Entanglement [69.25543534545538]
  We propose a novel quantum communication scheme relying on realistic noisy pre-shared entanglement. Our performance analysis shows that the proposed scheme offers competitive QBER, yield, and goodput.
  arXiv  Detail & Related papers  (2020-12-22T13:06:12Z)
• Entanglement transfer, accumulation and retrieval via quantum-walk-based qubit-qudit dynamics [50.591267188664666]
  Generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies. We propose a protocol that is able to attain entangled states of $d$-dimensional systems through a quantum-walk-based it transfer & accumulate mechanism. In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.
  arXiv  Detail & Related papers  (2020-10-14T14:33:34Z)
• Teleporting quantum information encoded in fermionic modes [62.997667081978825]
  We consider teleportation of quantum information encoded in modes of a fermionic field. In particular, one is forced to distinguish between single-mode entanglement swapping, and qubit teleportation with or without authentication.
  arXiv  Detail & Related papers  (2020-02-19T14:15:16Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.